The Little Acro is a small, electric-powered aerobatic glider that fits in
The wing is in one piece, screwed to the fuselage. But it can be detached to service the servos placed
in the fuselage.
Due to its compact dimensions, the Little Acro can be transported fully assembled in the trunk. The basis of the concept was to create an agile airplane for just "go flying for a bit".
- Wingspan: ca 1200 mm
- Length of the fuselage: ca 720 mm
- Take-off weight: ca 450 gr
- Drive: Brushless Motor (Max. diameter 28 mm, max. length 25 mm)
- Battery: LIPO 2S-3S 500-1000 mAh
- Control: Elevator (pendulum-elevator) / rudder / aileron (flaperon +-10°) / motor
- Center of gravity: ca. 35 mm behind the profile nose near the fuselage
- Deflections: 20-30° (Elevator 10-15°)
The Little Acro is not a beginner's model. You should already have some
flying experience with aileron models and be able to land a model safely.
However, the construction is uncomplicated. Once all the parts have been printed out, the model can be assembled by a practiced model maker in 15 to 20 hours.
When designing and printing the parts for my RC flight models, I use PrusaSlicer, which can be downloaded from https://www.prusa3d.de/prusaslicer/, to realize special desired properties
for 3D printed parts. These properties (e.g. adhesive surfaces or internal support structures) cannot be
achieved at all or only with great difficulty using a CAD program alone.
I use modifiers in Prusaslicer, which are essential for building this glider. For this reason I do not provide stl-files, but 3mf-files for download. If you still need stl files, here (Video: Extract stl-files out of 3mf-files) you will find a link on how stl files can be exported in PrusaSlicer.
The print files can be downloaded on Printables.com:
I have compiled a playlist of build videos for the Little Acro:
Little Acro: Maiden flight
Short video of the maiden flight of the Little Acro.
Playlist: Build-videos of the Little Acro
In this playlist you will find step-by-step instruction videos for building the Little Acro.